Spinning bucket drive



Dec- 7 J E. H-

SPINNING BUCKET DRIVE Filed March 12, 1936 a z W wm m W His Attorney.

Patented 7, 1937 IUNITED STATES PATENT OFFICE SPINNING BUCKET DRIVE Edwin Hull,

Schenectady, N. Y., asslgnor to v New York Application March 12, 1936, Serial No. 68,441

. The present inventionrelates to drives for a spinning buckets such as, for example, rayon spinning buckets, and has for its object to provide an improved construction and arrangement in drives of this type. v

For a consideration of what I believe to be novel and my invention, attention is directed to the following specification and the claim appended thereto.

In the drawing, Fig. 1 is a vertical sectional view of a construction embodying my invention; Fig. .2 is a perspective view of the lower portion of a spinning bucket; Fig. 31s a perspective view of an adapter which is located on the driving shaft; Fig. 4 is a detail. side view illustrating particularly the driving connection between the bucket and the adapter, and Fig. 5 is a view similar to Fig. 4 of a modification.

Referring to the drawing, I indicates a vertical driving shaft which may be the shaft of an electric motor and 2 indicates a rayon spinning bucket of suitable construction driven by the shaft I through an adapter .3. The adaptercomprises a metalsleeve 4 which fits over the upper end of shaft lwith a tight fit so as to'form a good driving connection. Inthe present instance, the upper end of the shaft is shown as being tapered and fitting into a tapered opening in sleeve 4. Spaced from the upper end of adapter 3 is a flange 5 having a fiat upper sur: face.

The bucket 2 is provided with a hub 6 having a bore 1 adapted to fit over the sleeve 4 of adapter 3. When the bucket is in place on the adapter, the bottom surface of hub 6 rests against the top surface offlange 5.

To effect a driving connection between the bucket and the adapter and shaft, I provide interengaging parts which serve to provide a positive drive in a circumferential direction and at the same time interlock onewith the other to prevent vertical movement or upward climbing of the bucket. v

According to the illustrated embodiment of my inventiomadapter 5 is provided with a plurality of projecting ears or lugs 8 having undercut sides as is indicated at 9 so that such ears or projections are in substance wedge shaped. I then provide on the bucket projecting earsor lugs Ill adapted to engage with the ears or lugs 8, as is illustrated particularly in Fig. 4. Ears or lugs 10 may be provided by metal bars located in grooves in the bottom of the bucket hub and fastened therein by means of screws, as is indi- 55 cated at H, the ends of the-bars projecting be- V 1 Claim. (01. 287- 53) yond the confines of the periphery of the bucket hub to provide the ears or lugs Ill. The ears or lugs ID are of, less height than the ears or lugs 8 so that when in engagement, the ears or lugs l0 engage the ears or lugs 8 at points below their 5 upper ends; in other words, engage the under out side walls 9. This serves to hold the bucket from moving vertically. If found desirable, the sides of ears or lugs in may be beveled to a greater or less extent to correspond to the beveled sides 9 of ears or lugs 8, as is illustrated at l2 in Fig. 5. Otherwise the construction shown in Fig. 5 may be the same as that shown in Figs. 1 to 4, and the same reference numeralshave' been applied to corresponding parts.

With the above described arrangement, when the bucket is in place on the adapter, as is shown in Figs. 1 and 4, as soon'as the shaft begins to rotate, it moves relatively to the bucket sufficiently to bring ears or lugs. 8 into engagement with ears or lugs ID, as is shown in Fig. 4, to provide a positive driving connection between the bucket and the adapter. Due to the beveled edges 9 with which the ears or lugs l0 engage, the bucket is held down firmly on its seat and preventedfmm vertical movement. When the motor is stopping, the inertia of the bucket overcomes the friction between the bucket and the adapter with the result that there is a movement of the adapter relative to the bucket which serves to bring ears or lugs Ill into engagement with the opposite sides of the ears or lugs 8. When this occurs, the other under-cut surfaces of the ears or lugs engage with each other so that while the bucket is being stopped, it is still held from vertical movement. After the bucket is stopped, it may be removed by lifting it vertically from the adapter.

By my, invention, I provide a rayon bucket drive which is simple in structure, positive in action, and prevents upward movement of the bucket while being rotated, and which is capable of being built at low cost. ---While I have particularly described my invention as being applied to rayon spinning buckets, the invention is not. necessarily limited-thereto but may be .used wherever found applicable.

- What I claim as new and desire to secure by Letters Patent in the United States is:

In a rayon spinning bucket drive, the combination of a vertical shaft,- a flange on the shaft spaced from the upper end thereof, arayon spinning bucket having a hub providedwith a borewhich fits the end of the shaft and with a flat bottom surface which engages and rests on 55 the top surface of said flange to support said bucket on the shaft end, radially outwardly extending driving lugs carried by the hub flush with the bottom surface thereof, and vertically extending ears projecting upwardly from said flange to engage said lugs to form a positive driving. connection between said rayon spinning bucket and said shaft, the sides of said ears which are engaged by the sides of the lugs being undercut whereby they serve to prevent upward movement of said bucket on the shaft end but do not inter- !ere with the ready removal of the bucket from 5 the shaft end.

EDWIN H. HULL. 

